H'l', ■'" 





m 





Aa 



V- 



^ 

 ■^--'f- 



'K-r-"^-^i 



X Ultra-violet- 



Holographs of the Solar Energy Spectrum. Observed at Montezuma. Chik-. July 7. 

 Precipitable water, 0.03 centimeters. 



